Study of the THGEM detector with a reflective CsI photocathode

• Published in: Chinese physics C Vol. 35; no. 4; pp. 363 - 367
• Main Author: 刘宏邦 郑阳恒 谢一冈 吕军光 周莉 俞伯祥 章爱武 安正华 谢宇广 张东 郑志鹏
• Format: Journal Article
• Language: English
• Published: IOP Publishing 01.04.2011; Graduate University of Chinese Academy of Sciences, Beijing 100049, China; Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China%Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China%Beijing Nuclear Instrument Factory, Beijing 100176, China; Guangxi University, Naning 530004, China%Graduate University of Chinese Academy of Sciences, Beijing 100049, China%Graduate University of Chinese Academy of Sciences, Beijing 100049, China
• Subjects: Adjustment; Anodes; Detectors; Electric fields; Extraction; Optimization; Photocathodes; Photoelectric effect; 光电效应; 光电阴极; 探测器; 提取效率; 最佳参数; 电场测量; 碘化铯; CsI; UV; THGEM; photocathode
• ISSN: 1674-1137; 0254-3052; 2058-6132
• DOI: 10.1088/1674-1137/35/4/008

The THGEM detector without and with a CsI has been tested successfully. The optimal parameters of THGEM have been determined from eight samples. The UV photoelectric effect of the CsI photocathode is observed. The changing tendency related to the extraction efficiency （εextr） versus the extraction electric field is measured, and several electric fields influencing the anode current are adjusted to adapt to the THGEM detector with a reflective CsI photocathode.